docs: add duncanbeevers as a contributor for doc (#1059)

* docs: update README.md [skip ci]

* docs: update .all-contributorsrc [skip ci]

---------

Co-authored-by: allcontributors[bot] <46447321+allcontributors[bot]@users.noreply.github.com>

Author: allcontributors[bot]

.all-contributorsrc

@@ -542,7 +542,8 @@
       "contributions": [
         "code",
         "bug",
-        "test"
+        "test",
+        "doc"
       ]
     },
     {

README.md

@@ -382,7 +382,7 @@ Thanks goes to these wonderful people ([emoji key](https://allcontributors.org/d
     <tr>
       <td align="center" valign="top" width="14.28%"><a href="https://philip-trauner.me"><img src="https://avatars.githubusercontent.com/u/9287847?v=4?s=100" width="100px;" alt="Philip Trauner"/><br /><sub><b>Philip Trauner</b></sub></a><br /><a href="https://github.com/drwpow/openapi-typescript/commits?author=PhilipTrauner" title="Code">💻</a> <a href="https://github.com/drwpow/openapi-typescript/commits?author=PhilipTrauner" title="Documentation">📖</a> <a href="https://github.com/drwpow/openapi-typescript/commits?author=PhilipTrauner" title="Tests">⚠️</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://powell-v2.github.io/"><img src="https://avatars.githubusercontent.com/u/25308326?v=4?s=100" width="100px;" alt="Pavel Yermolin"/><br /><sub><b>Pavel Yermolin</b></sub></a><br /><a href="https://github.com/drwpow/openapi-typescript/commits?author=Powell-v2" title="Code">💻</a> <a href="https://github.com/drwpow/openapi-typescript/commits?author=Powell-v2" title="Documentation">📖</a> <a href="https://github.com/drwpow/openapi-typescript/commits?author=Powell-v2" title="Tests">⚠️</a></td>
-      <td align="center" valign="top" width="14.28%"><a href="http://www.duncanbeevers.com"><img src="https://avatars.githubusercontent.com/u/7367?v=4?s=100" width="100px;" alt="Duncan Beevers"/><br /><sub><b>Duncan Beevers</b></sub></a><br /><a href="https://github.com/drwpow/openapi-typescript/commits?author=duncanbeevers" title="Code">💻</a> <a href="https://github.com/drwpow/openapi-typescript/issues?q=author%3Aduncanbeevers" title="Bug reports">🐛</a> <a href="https://github.com/drwpow/openapi-typescript/commits?author=duncanbeevers" title="Tests">⚠️</a></td>
+      <td align="center" valign="top" width="14.28%"><a href="http://www.duncanbeevers.com"><img src="https://avatars.githubusercontent.com/u/7367?v=4?s=100" width="100px;" alt="Duncan Beevers"/><br /><sub><b>Duncan Beevers</b></sub></a><br /><a href="https://github.com/drwpow/openapi-typescript/commits?author=duncanbeevers" title="Code">💻</a> <a href="https://github.com/drwpow/openapi-typescript/issues?q=author%3Aduncanbeevers" title="Bug reports">🐛</a> <a href="https://github.com/drwpow/openapi-typescript/commits?author=duncanbeevers" title="Tests">⚠️</a> <a href="https://github.com/drwpow/openapi-typescript/commits?author=duncanbeevers" title="Documentation">📖</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://t.me/tkukushkin"><img src="https://avatars.githubusercontent.com/u/1482516?v=4?s=100" width="100px;" alt="Timofey Kukushkin"/><br /><sub><b>Timofey Kukushkin</b></sub></a><br /><a href="https://github.com/drwpow/openapi-typescript/commits?author=tkukushkin" title="Code">💻</a> <a href="https://github.com/drwpow/openapi-typescript/commits?author=tkukushkin" title="Tests">⚠️</a> <a href="https://github.com/drwpow/openapi-typescript/issues?q=author%3Atkukushkin" title="Bug reports">🐛</a></td>
       <td align="center" valign="top" width="14.28%"><a href="https://semigradsky.dev/"><img src="https://avatars.githubusercontent.com/u/1198848?v=4?s=100" width="100px;" alt="Dmitry Semigradsky"/><br /><sub><b>Dmitry Semigradsky</b></sub></a><br /><a href="https://github.com/drwpow/openapi-typescript/issues?q=author%3ASemigradsky" title="Bug reports">🐛</a> <a href="https://github.com/drwpow/openapi-typescript/commits?author=Semigradsky" title="Tests">⚠️</a> <a href="https://github.com/drwpow/openapi-typescript/commits?author=Semigradsky" title="Code">💻</a></td>
       <td align="center" valign="top" width="14.28%"><a href="http://jeremyliberman.com/"><img src="https://avatars.githubusercontent.com/u/2754163?v=4?s=100" width="100px;" alt="Jeremy Liberman"/><br /><sub><b>Jeremy Liberman</b></sub></a><br /><a href="https://github.com/drwpow/openapi-typescript/commits?author=MrLeebo" title="Code">💻</a> <a href="https://github.com/drwpow/openapi-typescript/commits?author=MrLeebo" title="Tests">⚠️</a></td>